unitType Return the Units of a Unit Object

Description

This function returns the units of a unit object.

Usage

unitType(x, recurse = FALSE)

Arguments

x	A unit object.
recurse	Whether to recurse into complex units.

Value

For simple units, this will be just a vector of coordinate systems, like "inches" or "npc".

More complex units that involve an operation on units return an operator, like "sum", "min", or "max".

When recurse = TRUE, the result is always a list and more complex units generate sublists (see the Examples below).

Author(s)

Thomas Lin Pedersen and Paul Murrell

See Also

unit

Examples

u <- unit(1:5, c("cm", "mm", "in", "pt", "null"))

unitType(u)
unitType(unit(1, "npc"))
unitType(unit(1:3/4, "npc"))
unitType(unit(1:3/4, "npc") + unit(1, "inches"))
unitType(min(unit(0.5, "npc"), unit(1, "inches")))
unitType(unit.c(unit(0.5, "npc"), unit(2, "inches") + unit(1:3/4, "npc"),
                unit(1, "strwidth", "hi there")))
unitType(min(unit(1, "in"), unit(1, "npc") + unit(1, "mm")))

unitType(u, recurse=TRUE)
unitType(unit(1, "npc"), recurse=TRUE)
unitType(unit(1:3/4, "npc"), recurse=TRUE)
unitType(unit(1:3/4, "npc") + unit(1, "inches"), recurse=TRUE)
unitType(min(unit(0.5, "npc"), unit(1, "inches")), recurse=TRUE)
unitType(unit.c(unit(0.5, "npc"), unit(2, "inches") + unit(1:3/4, "npc"),
                unit(1, "strwidth", "hi there")), recurse=TRUE)
unitType(min(unit(1, "in"), unit(1, "npc") + unit(1, "mm")), recurse=TRUE)
unlist(unitType(min(unit(1, "in"), unit(1, "npc") + unit(1, "mm")),
                recurse=TRUE))